所有必填字段出现PHP错误-但所有字段都已插入

我正在用一个php处理程序（signup form handler.php）制作一个注册表单（signup.html）。 但我好像做错了什么

这是我的代码：

$errors = '';
$myemail = 'example@domain.com';//<-----Put Your email address here.
if(empty($_POST['FirstName'])  || 
   empty($_POST['LastName'])  || 
   empty($_POST['City'])  || 
   empty($_POST['Country']))
{
    $errors .= "\n Error: all fields are required";
}

$FirstName = $_POST['FirstName']; 
$LastName = $_POST['LastName'];
$City = $_POST['City'];
$Country = $_POST['Country'];
$Int1 = $_POST['Int1'];       // <---- Here's what seems to be the issue
$Int2 = $_POST['Int2'];       // <---- Here's what seems to be the issue 

if( empty($errors))
{
    $to = $myemail; 
    $email_subject = "Udfyldelse af test på Gamification: $FirstName";
    $email_body = "Du har fået en ny besvarelse. ".
    "Her er besvarelserne:\n Fornavn: $FirstName \n Efternavn: $LastName \n By: $City \n Land $Country \n".
    "De fire personlige interesser: $Int1 og $Int2"; 

    $headers = "From: $myemail\n"; 

    mail($to,$email_subject,$email_body,$headers);
    //redirect to the 'thank you' page
    header('Location: contact-form-thank-you.html');
} 

$errors=''；
$myemail='10〕example@domain.com';// 默认方法是GET。将表单方法设置为POST：

<form id="contact_form" name="contact_form" action="signup-form-handler.php" method="POST">



因此，基本上您没有将值传递给脚本。如果要使用GET方法，请将$\u POST的所有实例切换为$\u GET，您可以保持表单不变。
在输入Int1和Int2中，缺少属性type。
好的，对于初学者来说，粗体标记的“”已去除摩擦，请使用“”

如果你把这个添加到你的php页面上，它会工作的，尽管我不能理解丹麦人的意思，但还是可以使用这个表单。这是一个单页解决方案，不需要HTML文件

<?php
$form = '<form id="contact_form" name="contact_form" action="'.$_SERVER['PHP_SELF'].'" method="post" >


<!-- Personlige oplysninger -->


    <h3>Personlige oplysninger<a class="info" href="#" title="Testing"><img style="height: 15px; width: 15px; margin-left: 5px;" alt="Time" src="img/signup_form/info_simple.png"></a></h3>


    <strong>Mit navn er</strong>
    <input class="user_field" placeholder="fornavn" id="FirstName" name="FirstName" type="text" maxlength="60">
    <input class="user_field" placeholder="efternavn" id="LastName" name="LastName" type="text" maxlength="60" >
    <input type="text" class="user_field" placeholder="fornavn" id="FirstName" name="FirstName" >
    <strong>og bor i</strong>
    <input class="user_field" placeholder="indsæt by" id="City" name="City" type="text" maxlength="60" >
    <strong>,</strong>
    <input class="user_field" placeholder="indsæt land" id="Country" name="Country" type="text" maxlength="60" >
    <strong>Beskriv dig selv med 4 interesser</strong>
    <input type="text" id="Int1" name="Int1" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 1" >
    <input type="text" id="Int2" name="Int2" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 2" >

    <input  type="text" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 3" >

    <input type="text" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 4" >
    <input type="submit" name="submit" value="Enter">
</form>';
if (isset ($_POST['submit'])){
$errors = '';
$myemail = 'example@domain.com';//<-----Put Your email address here.
if(empty($_POST['FirstName'])  || 
empty($_POST['LastName'])  || 
empty($_POST['City'])  || 
empty($_POST['Country']))
{
$errors .= "\n Error: all fields are required";
$display = $errors.$form;
}else{
$FirstName = $_POST['FirstName']; 
$LastName = $_POST['LastName'];
$City = $_POST['City'];
$Country = $_POST['Country'];
$Int1 = $_POST['Int1'];       // <---- Here's what seems to be the issue
$Int2 = $_POST['Int2'];       // <---- Here's what seems to be the issue 

$to = $myemail; 
$email_subject = "Udfyldelse af test på Gamification: $FirstName";
$email_body = "Du har fået en ny besvarelse. ".
"Her er besvarelserne:\n Fornavn: $FirstName \n Efternavn: $LastName \n By: $City \n Land $Country \n".
"De fire personlige interesser: $Int1 og $Int2"; 

$headers = "From: $myemail\n"; 

mail($to,$email_subject,$email_body,$headers);
//redirect to the 'thank you' page
header('Location: contact-form-thank-you.html');
}
}else{
$display = $errors.$form;   
}

echo $display;
?>


您能同时包含相关的HTML代码吗？编辑：我也不清楚确切的错误是什么。我想你真的想写
$Int1=isset（$\u POST['Int1']）$_POST['Int1']：空给你，帕特。这足够了吗？如果我插入$Int1=isset（$\u POST['Int1']）$_POST['Int1']：空；而不是$Int1=$_POST['Int1']；我得到了相同的答案“错误：所有字段都是必需的”。@Patvia在我更好地解释了这个问题之前，希望没问题：）我也发现了这个问题，因为你可以继续往下看。那没关系。只是意味着它将默认为一种“文本”；没错，text是默认类型，type不是必需的属性；-）所以我应该在html文件中添加method=“post”，并在php中将$\u post更改为$\u GET？还是我还是弄错了？我本想做一件或另一件，而不是两件都做。为简单起见，只需将method=“POST”添加到表单标记中。我将“ed method=“POST”添加到表单的html标记中，现在它可以工作了：）非常感谢@ksealey:）这似乎是一个很好的方法。非常简单：）我是php新手，所以我跟随一个教程。谢谢分享：）没问题，你甚至可以进行错误检查。。。。例子。。。。。。if（empty（empty）（empty（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（empty）（请告诉我们您的名字）；$display=$errors.$form；}if（empty）（请告诉我们您的姓氏）{$errors.=“请告诉我们您的姓氏”；$display=$errors.$form；}
<?php
$form = '<form id="contact_form" name="contact_form" action="'.$_SERVER['PHP_SELF'].'" method="post" >


<!-- Personlige oplysninger -->


    <h3>Personlige oplysninger<a class="info" href="#" title="Testing"><img style="height: 15px; width: 15px; margin-left: 5px;" alt="Time" src="img/signup_form/info_simple.png"></a></h3>


    <strong>Mit navn er</strong>
    <input class="user_field" placeholder="fornavn" id="FirstName" name="FirstName" type="text" maxlength="60">
    <input class="user_field" placeholder="efternavn" id="LastName" name="LastName" type="text" maxlength="60" >
    <input type="text" class="user_field" placeholder="fornavn" id="FirstName" name="FirstName" >
    <strong>og bor i</strong>
    <input class="user_field" placeholder="indsæt by" id="City" name="City" type="text" maxlength="60" >
    <strong>,</strong>
    <input class="user_field" placeholder="indsæt land" id="Country" name="Country" type="text" maxlength="60" >
    <strong>Beskriv dig selv med 4 interesser</strong>
    <input type="text" id="Int1" name="Int1" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 1" >
    <input type="text" id="Int2" name="Int2" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 2" >

    <input  type="text" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 3" >

    <input type="text" class="tag_btn user_field" style="color: #FFFFFF;" placeholder="Interesser 4" >
    <input type="submit" name="submit" value="Enter">
</form>';
if (isset ($_POST['submit'])){
$errors = '';
$myemail = 'example@domain.com';//<-----Put Your email address here.
if(empty($_POST['FirstName'])  || 
empty($_POST['LastName'])  || 
empty($_POST['City'])  || 
empty($_POST['Country']))
{
$errors .= "\n Error: all fields are required";
$display = $errors.$form;
}else{
$FirstName = $_POST['FirstName']; 
$LastName = $_POST['LastName'];
$City = $_POST['City'];
$Country = $_POST['Country'];
$Int1 = $_POST['Int1'];       // <---- Here's what seems to be the issue
$Int2 = $_POST['Int2'];       // <---- Here's what seems to be the issue 

$to = $myemail; 
$email_subject = "Udfyldelse af test på Gamification: $FirstName";
$email_body = "Du har fået en ny besvarelse. ".
"Her er besvarelserne:\n Fornavn: $FirstName \n Efternavn: $LastName \n By: $City \n Land $Country \n".
"De fire personlige interesser: $Int1 og $Int2"; 

$headers = "From: $myemail\n"; 

mail($to,$email_subject,$email_body,$headers);
//redirect to the 'thank you' page
header('Location: contact-form-thank-you.html');
}
}else{
$display = $errors.$form;   
}

echo $display;
?>